Samuel melloe



(No Model.)

2 Sheets-Sheet't?. 1 S. -MELLOR. n

Rotary Engine or Pump. No. 236,173. .Patented Jan. 4, |881.

NVENTR ATTEST: 2 ,/W

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STATES ROTARY ENGINEv OR PUMP.

SPECIFICATION forming part of Letters Patent No. 236,173, dated January 4, 1881.

Application filed September 30, 1880.

of which the following is a specilication.

My invention relates to that class of rotary mechanisms which may be employed as engines or prime movers, to be rotated by steam or other fluids, or as a pump for elevatingI iiuids, being rotated in such a case by a prime mover.

In the drawings which serve to illustrate -my invention, Figure l is a transverse section taken in the plane of the line x a: in Fig. 2, and Fig. 2 is a longitudinal mid-section taken in the plane of the line y y in Fig. 1. I

Ais a xed cylinder, mounted upon and xed to a base or sole plate, B, or other suitable foundation. This cylinder has suspended within it a pendulous tongue or plate, G, hung on a rod, I), placed somewhat outside of the circumference or periphery of the cylinderbore. This tongue passes through and plays in a mortise or slot, E, in the cylindrical or rounded block Ii, which acts as a kind of piston, and the said block has acylindrical stem, G, provided with a bearing in a disk, H, arranged to rotate in and concentrically with the cylinder A. This disk fits snugly against the cylinder-cover I, and in contact with the peripheral wall of its inclosing-cylinder, and is lnounted or fixed on the end of. a shaft, J, which has a bearing in a stufng-box, K, on the cylinder-head. On this shaft may be mounted the pulley or gears for transmitting or receiving power.

M is the inlet to the cylinder A, and L the outlet. These may, when necessary, be governed by valves actuated by the engine.

4 The operation is as follows: On steam being admitted at M, it presses on the circular block F and vibrating tongue O. The Ablock slides on the tongue, and, through its connection with the disk H, rotates the shai't J. As the said shaftcontinues to rotate the block slides up and down upon the pendulous tongue,

'remaining always in close contact with the wall of the cylinder A, and the tongue vbrates to and fro. As the tongue does not extend (No model.) Patented in Great Britain March 30, 18H0.

across the cylinder, the steam may pass under its free end and escape at L while the block F is passing over above the center.

The engine may be made to rotate in the opposite direction by introducing the steam at L instead of4 M, and a disk and shaft may be fitted to each end of the cylinder.

When the machine is used as a pump the passages L and M serve as water inlets and outlets.

An ordinary valve may be introduced in some part of either the suction or delivery pipe, to prevent the return of the uid that is being pumped at the moment when the block F is passing between the ingress and egress passages. This will probably be necessary only when the pump is working against a great head of water or at a low speed, as in other cases the momentum of the vater will prevent any return of the water at that time.

Instead ot' arranging the inlets and outlets as shown, they may be arranged in the tongue O, and the block F be arranged to open and close them as it slides upon said tongue.

I am aware that it is not new to provide a rotating cylinder with a vibrating pendulous plate inside arranged to pass laterally through a lesser internal cylinder which rotates on an axis eccentric to that of the larger external rotating cylinder. This construction is very old, but has never come into use for various reasons, one being the rotation of the larger external cylinder. I am also aware that an engine has been proposed having a lixed external cylinder, a lesser internal cylindrical piston hung on a crank-pin or eccentric, and arranged to gyrate inside the exterior cylinder, sliding in its gyrations on an abutment or partitionv fixed in the exterior cylinder. I am not aware, however, that an engine having a fixed cylinder with a pendulous plate or tongue extending nearly across it, and a cylindrical block having a diameter equal to halt' the vinternal diameter of the cylinder, arranged to slide on the tongue and to be carried around the cylinder in such a manner as to rota-te the main shaft, has ever before been employed.

Having thus described my invention, I claim The combination, with a ixed cylinder, A,

provided with :L pendulous tongue, C, of the lous tongue passes, all arranged to operate main shaft having :t disk, H, which tits the substantially as set forth.

cylinder, and :t cylindrical block, F, having;` u SAMUEL MELLOR. diameter equal to halt' the internal diameter Witnesses:

5 of the cylinder' A, said block being mounted EDGAR EDMONDS, lotatively in the disk H and provided with a C. GROSSETETE,

mortise oi slot', E, through which the peudu- Patent Agents, 166 Fleet Street. 

